Notes And Tone Periods - AMSTRAD cpc 6128 User Instruction

Part 5: Sound
Notes and tone periods
The table which follows, gives the recommended ,tone period> settings for notes in the
usual even tempered scale, for the full eight octave range.
The frequency produced is not exactly the required frequency because the ,tone
period> setting has to be an integer. The RELATIVE ERROR is the percentage ratio
of the difference between the required and actual frequency.
NOTE FREQUENCY PERIOD RELATIVE ERROR
C
16.352
3822 -0.007%
C#
17.324
3608
+0.007%
D
18.354
3405 -0.007%
D#
19.445
3214 -0 .. 004 %
E 20.602
3034 +0.009%
Octave -4
F 21.,827
2863 -0.016%
F#
23.125
2703 +0.009%
G
24.500
2551 -0.002%
G#
25.957
2408 +0.005%
A 27,500
2273 +0.012%
A#
29.135
2145 -0.008%
8
30.868
2025 +0.011%
NOTE FREQUENCY PERIOD 'RELATIVE ERROR
C 32.703
1911 -0.007%
C#
34.648
1804 +0.007%
D
36.708
1703 +0.022%
D#
38.891
1607
-0.004%
E
41.203
1517 +0.009%
F
43.654
1432
+0.019%
Octave-3
F#
46.249
1351 -0.028%
G 48.999
1276 +0.037%
G#
51.913
1204 +0.005%
A
55.000 1136 -0.032%
A# 58.270 1073
+0.039%
8
61.735 1012 -0.038%
Chapter 7 Page 24 For your reference ....